Folding and scalloping machine



Sept. 15, 1931. s. J. CAMPBELL FOLDING AND SCALLOPING MACHINE Filedy Oct. 30, 1929 2 Sheets-Sheet l IN VEN TOR. SfaMaeJ'QW/e/ Mn/W ATTORNEY,

Sept. 15, 1931. s. J. CAMPBELL 1,822,954

FOLDING AND SCALLOPING MACHINE Filed Oct. 30. 1929 2 Sheets-Sheet 2 A T TORNEY SAMUEL J. CAIMPBELL, OF GREEN BAY', WESCNSNLSSGNOR [EO -H'UDSOE-SHARP vMTA- CHNE COMPANY, F GREEN ELY, J7

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CORlP-TION OF WISCONSIN FOLDNG ND SCLLLQPG TEACHINE Application filed -ctober 30, 1329.

The machine of the Vpresent invention is designed to continuously feed forward a strip orweb of paper, preferably tissue paper, and 'to cut therefrom lengths or sections which re twice folded to square fori'nation and are thereupon scalloped while in the folded condition, and packed into a stack for ultimate shipment. l

lziy arranging the scalloping dies to act i) upon `two meeting edges of a twice-folded paperlnapkin ort-he like, the scalloping will entend continuously around the entire inarlgin of the napkin when unfolded, andthe present invention is particularly designed to g; so correlate the scalloping and packing mechanisms that these two operations willbe simultaneously performed after the'folding is completed.

Further objects and details will appear 'ggg from aA description of the invention in con- -junction with the accompanying drawings, wherein l Fig. l is a 'View of asectional elevation through the center of the machine;

2 is a sectional detail showing the scalloping dies, the packer and associated mech- ,anisms;

Fig. 3 is a View of the saine at right angles to Fig. 2;

`Fig'. 4is a side elevation of the machine, showing the packingvand scalloping mechanism partly in section;

Fig. 5 is a View of the twice foldednapkin; and Y liig. 6 is a AView of the completed napkin in unfoldedrelation.

The machine, as a whole,comprises end frames 10r and ll, eachA of which is provided with upwardly extending arms 12 and 13,

lo and downwardly extending legs 14. The end Aframes areconnected by lower tubular cross connections'l and upper tieirods 16, which serve to rigidly secure the end frames together into a unified frame. structure.

The upper arms 12l and 13 serve'to support top rails i7 which are extended to afford brackets 18-18 which serve to journal the paper rolls 1Q-19, theinachine being constructed in duplicate to simultaneously feed 50 'two paper websto the folding, scalloping Serial No. 403,385.

and packing mechanisms now to'be described. ln View ofthe'fact thatthe'parts are arranged in duplicate, adescription ofone end of tile machine will suffice for'both.

The paper web 'fromone ofsthe paperrolls 19 is fed over aguide roller'20andf'thence down' over a triangular obliquely .disposed Aplate,constituting a lformer 2l `whichgives fio the paper weba longitudinal fold, the oncefolded paper passing between draw rollers 22 below the former. Fromthe vrollers the once-folded web is-carried 'through cutting rollers 23-523 andthence in front of an endlesstape 24, carried overlrollers 25 and 26 and in contact'with a tension roller 27. An oscillating folder bladev28 is: mounted 'for reciprocation across the path of the paper as it is carried down between thetape -24 and a companiontape 29 mounted-Jon rollers SO-BO. r

The oscillating folder blade ccarried'by anl arm 31 carried by al rock shaft 321'the operation of the folder beingsotimed as' tofengage rthe center ofal oncefolded `'paper lweb section at the instant the saine is lsevered Iby A the cutting rollers 23-+23, so "that, at'thiskinstant the severed websection-will be carried klaterally by the 'folder bladefinto thevbite-o'f upper and lower 'foldinglrollersfen'd 34,

the rst of which mounts an endless tapeior.

beit 35, the inner turn of whichxengageslthe foldingroller 34. Thebeltxor tape Apasses around the upperl rollerlandaguidel roller 36, the parts being so arranged Ya'ndtimed that the once-folded .paper section lengaged by the folder blade will be=caughti between the? bite of the rolls 83y and 34 andearried undeil the tape or belt to impartthecross foid tothe napkin or other article.

The Etwice-folded napkin `willi be fed down between'lips 37 and 38 whichilieinlspaced `relation serve to feed theftwice-folded napkin in front of alreciprocating'plunger 39 mounted upon a base plate -40ia'nd actuated by aplunger rodi41.

The: plunger is of substantially square configuration, as shown in Fig. 3, and isprovided around two of its,convergingedgeswith scallops or undulations 42 whichconstitute a male scalloping die, the metal aiong these lll) edges being rearwardly extended to furnish a marginal reinforcing flange 43 behind the die portion of the plunger.

The plunger cooperates with a female die in the form of an angularly configured frame 44 having around its two converging inner edges a scalloped flange 45 which constitutes the female die with which the plunger' cooperates. The die, as a whole, is suitably mounted upon the base plate 40 and support.- ed from above by a bracket frame 46, or in any other suitable manner.

In order to guide the twice-folded napkins between the dies when in the open or retracted position shown in full lines in Fig. 2, guide fingers 47 are provided which eX- tend upwardly through slots 48 in the base plate 40, and, when elevated, stand in spaced relation to the plunger in its retracted position. Each of the fingers is provided with rack teeth 49 which engage with a spur pinion 50 operated by a toothed segment 5l carried by a rock shaft 52 having keyed thereon a crank arm 53 which is actuated by a rod 54. These parts are suitably timed so that as the plunger advances to bring the die members into co-active relation, the fingers will recede as the napkin is packed out.

Behind the female die is located an elongated trough 55 which receives the quarterfolded napkins as they are packed out, a weight 56 or other suitable resistance member being located within the trough to maintain the quarter-folded napkins in stack formation as they are forced from the dies and into the trough.

In operation, the paper web is fed continuously from the roll and down over the former and through the draw rollers and cutting rollers. As the cutting rollers rotate, they will measure off sections of the oncefolded web and sever the same at the instant the folder blade advances to transversely engage the leading section preparatory to initiating a cross fold in it.

Thereafter, the folder blade will move forwardly and thrust the paper section into the folding rollers 38-34 which complete the fold and deliver the quarter-folded napkin between the scalloping dies with the free or raw edges extended around two sides of the quarter-fold and in position to be engaged by the dies. Y

As soon as the quarter-folded napkin is thus positioned, the plunger will advance simultaneously with the retraction of the guide fingers 47 so that the raw edges of the quarter-folded napkin will be cut by the dies and given a scalloped configuration, the trimmings being removed and discharged by a pneumatic blast or other suitable means for removing the waste. The plunger will advance sufficiently to discharge the quarterfolded napkin against the resistance of the stackof folded napkins in advance, and thereafter the series of operations Will be repeated in continuous succession.

The machine, as a whole, is simple in construction, and by reason of the unification of the scalloping mechanism with the packer, it is not necessary to provide independent scalloping mechanism for action on the paper during a preliminary stage in the feeding operation.

Furthermore, by the provision of scalloping dies which are arranged to act upon the napkin in its twice-folded condition, the length or extent of the dies is reduced, since by a single operation four plies of paper are simultaneously scalloped, which 'completes the marginal scalloping all the Way around the napkin.

Furthermore, although the term napkin has been employed as a convenient designation for the article folded and scalloped by the present machine, it will be understood that the machine is applicable for use in the folding or scalloping of other articles of paper or fabric, irrespective of the use for which they are ultimately intended.

Although the invention has been described in particular detail, it is not the intention to limit the same, save as indicated in the claims, since variation in structure may be introduced without departing from the spirit of the invention.

I claim:

l. In a machine of the class described, the combination of means for folding an article, scalloping dies located at the discharge end of the folding means, and means for actuating the scalloping dies after delivery of the folded article to scallop and discharge the same. v

2. In a machine of the class described, the combination of means for folding an article, scalloping dies located at the discharge end of the folding means, means for actuating the scalloping dies after delivery of the folded article to scallop and discharge the same, a guide finger coacting with the scalloping dies to position the folded article in advance of the scalloping operation, and means for retracting the guide finger as the scalloping operation is initiated.

3. In a machine of the class described, the combination of means for folding an article, scalloping dies located at the discharge end of the folding means, means for actuating the scalloping dies after delivery of the folded article to scallop and discharge the same, a guide finger positioned to receive the folded article between the scalloping dies, the guide finger' being provided with rack teeth, and a pinion meshing therewith to retract the guidefnger as the scalloping op eration is initiated.

4. In a machine of the class described, the combination of means for longitudinally folding an article, means for transversely folding the longitudinally folded article to Produce a quarter-folded article, male and female scalloping dies configured to act upon two converging edges of the quarterefolded article, means for advancing the male die member to. co-act with the female die meme ber in scalloping the quarter-folded article and in discharging the same.

5. In a. machine of the class described, the combination of means for longitudinally folding an article, means for transversely folding the longitudinally folded article to produce a quarter-folded article, male and female scalloping dies configured to act upon two converging edges of the quarter-folded article, means for advancing the male die member to co-act With the female die member in scalloping the quarter-folded article and in discharging the same, and a trough located behind the female die member and adapted to receive the discharged quarterfolded articles in stack formation.

6. In a machine of the class described, the combination of means for longitudinally folding an article, means for transversely` folding the longitudinally folded article to produce a quarter-folded article, male and female scalloping dies configured to act upon two converging edges of the quarter-folded article, means for advancing the male die member to co-act with the female die member in scalloping the quarter-folded article and in discharging the same, a reciprocating guide finger located in co-acting relation With the female scalloping die and adapted to position the quarter-folded article between the dies, and means for retracting the finger as the male die advances.

7. In a machine of the class described, the combination of means for longitudinally folding an article, means for transversely folding the longitudinally folded article to produce a quarter-folded article, male and female scalloping dies configured to act upon two converging edges of the quarter-folded article, means for advancing the male die member to co-act with the female die member in scalloping the quarter-folded article and in discharging the same, a trough located behind the female die member and adapted to receive the discharged quarter-folded articles in stack formation, a reciprocating guide finger located in co-acting relation With the female scalloping die and adapted to position the l quarter-folded article betW-een the dies, and

means for retracting the finger as the male die advances.

8. In a machine of the class described, the combination of means for longitudinally folding a Web of material, means for severing sections of the once-folded Web, a folder blade for initiating a cross fold in the once-folded and severed section, folding ro-llers for completing the cross fold, male and female scalloping die members normally standing in Separated relation and n position to receive the quarterffolded article from the folding rollers, and Ineens for advancing the male die to effect the scallopng operation,

9.-. In a machine of the class described, the combination of means for longitudinally folding a Web of material, means for severing sections of the once-folded web, a folder blade for initiating a cross fold in the once-folded and severed section, folding rollers for comc pleting the cross fold, male and female scal loping die members normally standing in Separated relation and in position to. receive the quarter-folded article from the folding rollers, means for advancing the male die to effect the scalloping operation, a guide finger normally standing in opposed relation to the male die, and means for retracting said guide finger vas the male die advances.

10. In amachine of the class described, the combination of means for longitudinally folding a web of material, means for severing sections ofthe once-folded web, a folder blade for initiating a cross fold in the once-folded and severed section, folding rollers for com? pleting the cross fold, male and female scalloping die members normally standing in separated rela-tion and in position to receive the quarter-folded article from the folding rollers, means for advancing the male die to effect the scalloping operation, .and a trough located behind the female die member and adapted to receive the folded and scalloped articles in stack formation.

ll. In a machine of the class described, the combination of means for longitudinally folding a Web of material, means for severing sections of the oncesfolded web, a folder blade for initiating a cross fold in the once-folded and severed section, folding rollers for completing the cross fold, male and female scalloping die members normally standing in separated relation and in position to receive the quarter-,folded article from the folding rollers, means for advancing the male die to effect the scallopng operation, -a guide finger normally standing in opposed relation to the male die, means for retracting said guide finger as the `male die advances, and a trough located behind the female die member and adapted to receive the folded and scalloped articles in stack formation.

l2. In a machine of the class' described,-

from thefolding rollers, said dies normally standing in separated relation and saiddies being provided around two edges Withoutting members adapted to impart the desired edge configuration to the edges of thequarter-folded article, and means for reciprocating the male die member.

13. In a machine of the class described, the combination of a former adapted to longitudinally fold a paper Web, cutting rollers positioned to receive the once-folded paper Web after its passage over the former and to sever sections therefrom, an oscillating folder blade adapted to initiate a cross fold in the Vonce-folded paper section, folding rollers co-acting With the folder blade and adapted to receive the paper section therefrom and complete the cross fold, male and female scalloping dies located in position to receive the quarter-folded article from the folding rollers, said dies normally standing in separated relation and said dies being provided around tWo edges With cutting members adapted to impart the desired edge configuration to the edges of the quarter-folded article, means for reciprocating the male die member, a guide linger normally standing in opposed relation to the male die member, and means for retracting said guide finger before the advance of the male die member.

14. In a machine of the class described, the combination of a former adapted t-o longitudinally fold a paper web, cutting rollers positioned to receive the once-folded paper web after its passage over the former and to sever sections therefrom, an oscillating folder blade adapted to initiate a cross fold in the once-folded paper section, folding rollers-co-acting With-the folder blade and Y adapted to receive the paper section therefrom and complete the cross fold, male and female scalloping dies located in position to receive the quarter-folded article from the folding rollers, said dies normally standing in separated relation andV said dies being provided around two edges With cutting members adapted to impart the desired edge configuration to the edges of the quarterfolded article, means for reciprocating the male die member, and a trough located behind the female die member and adapted to receive the quarter-folded articles therefrom in stack formation.

15. In a machine of the class described, the combination of a former adapted to longitudinally fold a paper Web, cutting rollers positioned to receive the once-folded paper web afer its passage over the former and to sever sections therefrom, an oscillating folder blade adapted to initiate a cross fold in the once-folded paper section, folding rollers co-act-ing with the folder blade and adapted to receive the paper section therefrom and complete the cross fold, male and female scalloping dies located in position to receive the quarter-folded article from the `folding rollers, said dies normally standing 1n separated relation and said dies being provided around two edges with cutting,

members adapted to impart the desired edge i the quarter-folded articles vtherefrom in4 stack formation.

16. In a machine of the class described, the combination of means for tvvice folding an article, male and female cutting dies located at the discharge' end of said folding means and in position to receive a quarterfolded article delivered therefrom and normally standing in separated relation to one another, and means for advancing one of said dies into cutting relation With the other.

In witness that I claim the foregoing I i have hereunto subscribed my name this 24th day of Oct., 1929.

SAMUEL J. CAMPBELL.

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